PrtFile LoadImageHeader(Stream s, out Dictionary <int, uint[]> palettes)
{
var spriteCount = s.ReadUInt32();
var h = new PrtFile()
{
ImageCount = (int)spriteCount,
ImageHeader = new Op2Image[spriteCount]
};
palettes = new Dictionary <int, uint[]>();
var rawFrames = h.ImageHeader;
for (var f = 0; f < rawFrames.Length; f++)
{
var paddedWidth = s.ReadUInt32();
var dataOffset = s.ReadUInt32();
var height = s.ReadUInt32();
var width = s.ReadUInt32();
var type = s.ReadUInt16();
var palette = s.ReadUInt16();
palettes.Add(f, framePalettes[palette]);
var img = new Op2Image
{
PaddedWidth = paddedWidth,
DataOffset = dataOffset,
Height = height,
Width = width,
ImageType = type,
Palette = palette,
};
h.ImageHeader[f] = img;
}
h.AllGroupCount = s.ReadInt32();
h.AllFrameCount = s.ReadInt32();
h.AllPicCount = s.ReadInt32();
h.AllExtInfoCount = s.ReadInt32();
return(h);
}
private bool IsPrt(Stream s)
{
var start = s.Position;
var h = new PrtFile()
{
ID = s.ReadASCII(4),
PalCount = s.ReadInt32(),
};
if (h.ID != "CPAL")
{
s.Position = start;
return(false);
}
h.PalData = new Ppal[h.PalCount];
// Parse palettes
for (var i = 0; i < h.PalCount; i++)
{
var ppal = new Ppal
{
ID = s.ReadASCII(4),
Size = s.ReadInt32(),
HeadID = s.ReadASCII(4),
BytesPerEntry = s.ReadInt32(),
Unknown = s.ReadInt32(),
DataID = s.ReadASCII(4),
PalSize = s.ReadInt32()
};
if (ppal.ID != "PPAL" || ppal.HeadID != "head" || ppal.DataID != "data")
{
s.Position = start;
return(false);
}
var numPaletteEntries = ppal.PalSize / ppal.BytesPerEntry;
ppal.PaletteData = new RgbQuad[numPaletteEntries];
// Populate palette
for (var j = 0; j < numPaletteEntries; j++)
{
var rgba = new RgbQuad
{
Red = s.ReadByte(),
Green = s.ReadByte(),
Blue = s.ReadByte(),
Reserved = s.ReadByte(),
};
ppal.PaletteData[j] = rgba;
}
h.PalData[i] = ppal;
}
h.ImageCount = s.ReadInt32();
h.ImageHeader = new Op2Image[h.ImageCount];
for (var i = 0; i < h.ImageCount; i++)
{
var img = new Op2Image
{
SizeScanline = s.ReadInt32(),
};
img.ImgData = s.ReadBytes(img.SizeScanline);
img.SizeX = s.ReadInt32();
img.SizeY = s.ReadInt32();
img.Unknown = s.ReadInt16();
img.Palette = s.ReadInt16();
h.ImageHeader[i] = img;
}
h.AllGroupCount = s.ReadInt32();
h.AllFrameCount = s.ReadInt32();
h.AllPicCount = s.ReadInt32();
h.AllExtInfoCount = s.ReadInt32();
h.Groups = new ImageGroup[h.AllGroupCount];
for (var i = 0; i < h.AllGroupCount; i++)
{
var img = new ImageGroup
{
Unknown1 = s.ReadInt32(),
SelLeft = s.ReadInt32(),
SelTop = s.ReadInt32(),
SelRight = s.ReadInt32(),
SelBottom = s.ReadInt32(),
CenterX = s.ReadInt32(),
CenterY = s.ReadInt32(),
Unknown8 = s.ReadInt32(),
FrameCount = s.ReadInt32()
};
img.Frames = new Op2Frame[img.FrameCount];
for (var j = 0; j < img.FrameCount; j++)
{
var frame = new Op2Frame
{
PicCount = s.ReadUInt8(),
Unknown = s.ReadUInt8(),
};
frame.ExtUnknown1 = new BytePair[frame.PicCount >> 7];
for (var k = 0; k < frame.PicCount >> 7; k++)
{
var bp = new BytePair
{
Byte1 = s.ReadUInt8(),
Byte2 = s.ReadUInt8(),
};
frame.ExtUnknown1[k] = bp;
}
frame.ExtUnknown2 = new BytePair[frame.Unknown >> 7];
for (var k = 0; k < frame.Unknown >> 7; k++)
{
var bp = new BytePair
{
Byte1 = s.ReadUInt8(),
Byte2 = s.ReadUInt8(),
};
frame.ExtUnknown2[k] = bp;
}
frame.Pictures = new Op2Picture[frame.PicCount & 0x7F];
for (var k = 0; k < frame.Pictures.Length; k++)
{
var pic = new Op2Picture
{
ImgNumber = s.ReadInt16(),
Reserved = s.ReadUInt8(),
PicOrder = s.ReadUInt8(),
PosX = s.ReadInt16(),
PosY = s.ReadInt16()
};
frame.Pictures[k] = pic;
}
img.Frames[j] = frame;
}
img.GroupExtCount = s.ReadInt32();
img.Extended = new GroupExt[img.GroupExtCount];
for (var j = 0; j < img.GroupExtCount; j++)
{
var ext = new GroupExt
{
Unknown1 = s.ReadInt32(),
Unknown2 = s.ReadInt32(),
Unknown3 = s.ReadInt32(),
Unknown4 = s.ReadInt32(),
};
img.Extended[j] = ext;
}
h.Groups[i] = img;
}
file = h;
return(true);
}
